PROJECT
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closest drain is 50m away and you need to come up with
a solution. The sooner you get this information the better,
making it more likely you’ll find a solution, because as
the construction progresses, the constraints will just get
tighter and tighter. the domestic water installation, and the internal
drainage installation. 1. The drainage installation from
the core toilet and ablutions
facilities.
2. Each floor holds easily
accessible ducts for
maintenance and inspections.
3. The main kitchens were also
part of the installation and
comprise various stainless
steel wash-up sinks and
drainage.
Starting a building from scratch, you can really
do anything – you can put in additional stacks, an
additional drainage or duct – but once the building
has been started you have a structure that can
become compromised and then special evaluation and
permission will be required from the structural engineer
on how and where to core. When you have brick work
and partitioning that comes up, you have to sometimes
be very creative because you may have a different office
set-up on the lower floors, and so on.
THE WET SERVICES SYSTEM
The wet services of the building involve the water
storage and pump system, the hot water generation,
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The water storage and pump system comprise of a
complete concrete potable water storage tank together
with a Grundfos variable speed MPC pump set, the
requisite diaphragm tanks, valves and fittings that supply
pressurised water from the bottom of the building (being
the lower parking floor at ground level).
The cold water pump set also pressurises the hot water
generation plant that consists of two 5 000ℓ horizontal
mild steel boilers, or calorifyers, coupled to air-to-water
heat pumps. All of the copper piping, both supply and
return to the plant room, forms the hot water installation.
The design concept is that under normal operating
conditions the heat pump provides water at 55°C into
the tanks and builds up hot water overnight that would
be ready for use during the day. Should the heat pump
July 2019 Volume 25 I Number 5